qmimsg: make qmimsg_tlv_get return length if called with NULL value

BUG=chromium-os:27303
TEST=will come later

Change-Id: I1d1d204af8825aca8e6be5faae40389c409cfcad
2 files changed
tree: 53687f90b10b131f2ed9a2336240838fe397d855
  1. .gitignore
  2. LICENSE
  3. Makefile
  4. README
  5. include/
  6. src/